#ifndef _MAX_H
#define _MAX_H

// Here we define a couple of symbolic constancts, using #define

#define MIN_MONTH  1     // january
#define MAX_MONTH 12   // december

// #define can create "macros".  A macro looks like a method invocation,
// but what happens is that at preprocessor time the macro invocation in
// the source code is replaced by the definition of the maco, a string operation.
// The compiler then compiles the expanded code

#define max(a,b) a>b?a:b

// that macro had a bug.  Here's a correct definition.

#define MAX(a,b) ((a)>(b)?(a):(b))

#endif // _MAX_H